EP 2367049 A2 20110921 - Liquid crystal display device
Title (en)
Liquid crystal display device
Title (de)
Flüssigkristallanzeigevorrichtung
Title (fr)
Dispositif d'affichage à cristaux liquides
Publication
Application
Priority
JP 2010064321 A 20100319
Abstract (en)
The present invention enables a liquid crystal display device using LEDs as a light source to reduce uneven brightness, increase efficiency of heat discharged from the LEDs, and provide area brightness control. The liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide panel and a plurality of LEDs arranged on a line. The light guide panel includes a concave portion extending in a longitudinal direction of the light guide panel. A large number of LEDs are placed in the concave portion of the light guide panel. The plurality of LEDs arranged on a line emit light alternately in opposite directions. This configuration allows for uniform brightness distribution without forming a large number of concave portions in the light guide panel. Further, this configuration also allows for area brightness control by controlling a large number of LEDs by group.
IPC 8 full level
G02F 1/13357 (2006.01); G02B 6/00 (2006.01)
CPC (source: EP US)
G02B 6/0021 (2013.01 - EP US); G02B 6/0068 (2013.01 - EP US); G02B 6/0083 (2013.01 - EP US); G02F 1/133603 (2013.01 - EP US); G02F 1/133611 (2013.01 - EP US)
Citation (applicant)
JP 2006236701 A 20060907 - SONY CORP
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2367049 A2 20110921; EP 2367049 A3 20111123; EP 2367049 B1 20180228; CN 102193245 A 20110921; CN 102193245 B 20141126; JP 2011198623 A 20111006; JP 5506483 B2 20140528; TW 201133086 A 20111001; TW I422924 B 20140111; US 2011228196 A1 20110922; US 8687148 B2 20140401
DOCDB simple family (application)
EP 10014086 A 20101028; CN 201010533896 A 20101029; JP 2010064321 A 20100319; TW 99127433 A 20100817; US 91491510 A 20101028